import axios from 'axios'
import {
	Notification,
	MessageBox,
	Message,
	Loading
} from 'element-ui'
import store from '@/store'
import {
	getToken
} from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import {
	tansParams,
	blobValidate
} from "@/utils/ruoyi";
import cache from '@/plugins/cache'
import {
	saveAs
} from 'file-saver'

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = {
	show: false
};
let baseapi;
if (process.env.NODE_ENV === 'development') {  
  // 开发环境代码  
  baseapi = 'http://192.168.0.32:7861'
} else if (process.env.NODE_ENV === 'production') {  
  // 生产环境代码  
  baseapi = 'http://192.168.0.32:7861'
}


axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
	// axios中请求配置有baseURL选项，表示请求URL公共部分
	baseURL: baseapi,
	// 超时
	timeout: 100000000000
})

// request拦截器
service.interceptors.request.use(config => {
	// 是否需要设置 token
	const isToken = (config.headers || {}).isToken === false
	// 是否需要防止数据重复提交
	const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
	if (getToken() && !isToken) {
		config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
	}
	// get请求映射params参数
	if (config.method === 'get' && config.params) {
		let url = config.url + '?' + tansParams(config.params);
		url = url.slice(0, -1);
		config.params = {};
		config.url = url;
	}
	if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
		
		if (config.url == '/uploadfile'||config.url == '/chat/img') {
			// let prefix = config.baseURL.substring(0, config.baseURL.length - 4);
			
			if (process.env.NODE_ENV === 'development') {
			  // 开发环境代码  
			 config.baseURL ='http://192.168.0.32:7864'
			} else if (process.env.NODE_ENV === 'production') {  
			  // 生产环境代码  
			 config.baseURL ='http://192.168.0.32:7864'
			}
			
			
		}
		const requestObj = {
			url: config.url,
			data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
			time: new Date().getTime()
		}
		const requestSize = Object.keys(JSON.stringify(requestObj)).length; // 请求数据大小
		const limitSize = 5 * 1024 * 1024; // 限制存放数据5M
		if (requestSize >= limitSize) {
			console.warn(`[${config.url}]: ` + '请求数据大小超出允许的5M限制，无法进行防重复提交验证。')
			return config;
		}
		const sessionObj = cache.session.getJSON('sessionObj')
		if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
			cache.session.setJSON('sessionObj', requestObj)
		} else {
			const s_url = sessionObj.url; // 请求地址
			const s_data = sessionObj.data; // 请求数据
			const s_time = sessionObj.time; // 请求时间
			const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
			if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
				const message = '数据正在处理，请勿重复提交';
				console.warn(`[${s_url}]: ` + message)
				return Promise.reject(new Error(message))
			} else {
				cache.session.setJSON('sessionObj', requestObj)
			}
		}
	}
	return config
}, error => {
	console.log(error)
	Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
		// 未设置状态码则默认成功状态
		const code = res.data.code || 200;
		// 获取错误信息
		const msg = errorCode[code] || res.data.msg || errorCode['default']
		// 二进制数据则直接返回
		if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
			return res.data
		}
		if (code === 401) {
			if (!isRelogin.show) {
				isRelogin.show = true;
				MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
					confirmButtonText: '重新登录',
					cancelButtonText: '取消',
					type: 'warning'
				}).then(() => {
					isRelogin.show = false;
					store.dispatch('LogOut').then(() => {
						location.href = '/index';
					})
				}).catch(() => {
					isRelogin.show = false;
				});
			}
			return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
		} else if (code === 500) {
			Message({
				message: msg,
				type: 'error'
			})
			return Promise.reject(new Error(msg))
		} else if (code === 601) {
			Message({
				message: msg,
				type: 'warning'
			})
			return Promise.reject('error')
		} else if (code !== 200) {
			Notification.error({
				title: msg
			})
			return Promise.reject('error')
		} else {
			return res.data
		}
	},
	error => {
		console.log('err' + error)
		let {
			message
		} = error;
		if (message == "Network Error") {
			message = "后端接口连接异常";
		} else if (message.includes("timeout")) {
			message = "系统接口请求超时";
		} else if (message.includes("Request failed with status code")) {
			message = "系统接口" + message.substr(message.length - 3) + "异常";
		}
		Message({
			message: message,
			type: 'error',
			duration: 5 * 1000
		})
		return Promise.reject(error)
	}
)

// 通用下载方法
export function download(url, params, filename, config) {
	downloadLoadingInstance = Loading.service({
		text: "正在下载数据，请稍候",
		spinner: "el-icon-loading",
		background: "rgba(0, 0, 0, 0.7)",
	})
	return service.post(url, params, {
		transformRequest: [(params) => {
			return tansParams(params)
		}],
		headers: {
			'Content-Type': 'application/x-www-form-urlencoded'
		},
		responseType: 'blob',
		...config
	}).then(async (data) => {
		const isBlob = blobValidate(data);
		if (isBlob) {
			const blob = new Blob([data])
			saveAs(blob, filename)
		} else {
			const resText = await data.text();
			const rspObj = JSON.parse(resText);
			const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
			Message.error(errMsg);
		}
		downloadLoadingInstance.close();
	}).catch((r) => {
		console.error(r)
		Message.error('下载文件出现错误，请联系管理员！')
		downloadLoadingInstance.close();
	})
}

export default service